Classifications

• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
  • H02M1/00—Details of apparatus for conversion
  • H02M1/32—Means for protecting converters other than automatic disconnection
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
  • H02M1/00—Details of apparatus for conversion
  • H02M1/36—Means for starting or stopping converters
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
  • H02M3/00—Conversion of dc power input into dc power output
  • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
  • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
  • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
  • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
  • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
  • H02M1/00—Details of apparatus for conversion
  • H02M1/32—Means for protecting converters other than automatic disconnection
  • H02M1/322—Means for rapidly discharging a capacitor of the converter for protecting electrical components or for preventing electrical shock

Definitions

• Circuit arrangement and method for increasing the safety of an electronic control gear are provided.
• the invention relates to electronic control gear, which are operated at mains voltage. These devices usually have a power input filter consisting of capacitors and inductive components. Usually in this line filter so-called X capacitors are included, which are capacitors located between the AC terminals.
• One approach is to choose the X-capacitors so small that they are discharged in the pre- ⁇ written time with the low power consumption in the state of the device, ie when the lamps are turned off.
• the other option is to increase the clotting ⁇ gen se Stand By consumption of a modern electronic control gear artificially to discharge the capacitors in the prescribed time.
• the capacitors are chosen to be sufficiently large, then the very low power consumption of the operating device in stand-by must be artificially increased, which has a negative effect on the total power consumption and ultimately also on the environment.
• operating device is a device that is permanently connected to the mains voltage and Ü via a control interface that Lamp or the lamps on and off. Are the lights turned off, the device will be ⁇ in the Stand By. In this state, the voltage at the mains input terminals is constantly or periodically monitored. If the disconnection of the mains voltage is detected, an appropriate consumer ⁇ cher for a defined period of time is switched constant or getak ⁇ tet.
• the power loss of the consumer and the length of the defined period of time are tuned so that the energy stored in the capacitors is consumed, and the voltage applied to the mains input terminals of the electronic control gear is degraded quickly.
• the Ver ⁇ power loss of the load and the length of the definable period of time th are sized so that the voltage applied to the power input terminals of the electronic ballast is so rapidly reduced that the various safety regulations are complied with.
• Fig. 1 shows a circuit diagram of the circuit arrangement according to the invention, with power input terminals (3), a network input filter (1), a rectifier part with filter ⁇ capacitor (2), and a DC-DC converter (4).
• the mains input filter (1) consists of two X capacitors (XCl, XC2) and a choke. After the mains input filter (1) comes a rectifier section (2) with subsequent smoothing capacitor (Cl). The smoothed voltage is conditioned by a DC-DC converter (4), which contains a switching transistor (Ql). To detect the mains voltage is a voltage divider (5), which picks up the voltage at the smoothing capacitor (Cl). Alternatively, however, the voltage can also be tapped on one of the X capacitors (XCl, XC2). The output of the voltage divider is connected to an input of an existing microcontroller (U1). Switching off the mains voltage can be done by comparing with a threshold value which must be fallen below must be detected.
• the size of the voltage drop (dU / dT) can be detected.
• the detection of switching off the mains voltage takes place when the voltage drop exceeds a certain level. But it can be linked to the speed and security of recognition to raised stabili ⁇ hen both methods.
• a third possibility is to recognize whether an AC voltage is always present at the terminals or not. Since this can be done independently of the standby consumption and the state of charge of the capacitors, this method is useful especially for very low standby consumption of the electronic control gear, and can increase the speed and security of the detection.
• the voltage converter transistor Q is for a very short time (a few ms) ⁇ on to consume the energy stored in the capacitors energy quickly. It is possible to keep the voltage converter switched on constantly. But it can also be clocked so as not to make the resulting current too large. In this way, already existing components can be used in the circuit, so that no additional costs arise.
• a voltage divider tap on the smoothing capacitor C1 is also already available in many operating devices. so that no additional costs are incurred here.

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• Engineering & Computer Science (AREA)
• Power Engineering (AREA)
• Rectifiers (AREA)

Priority Applications (6)

Applications Claiming Priority (1)

Publications (1)

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ID=38596387

Family Applications (1)

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Cited By (4)

Families Citing this family (9)

Citations (7)

Family Cites Families (1)

• 2007
  • 2007-01-17 PL PL07703934T patent/PL2122813T3/pl unknown
  • 2007-01-17 US US12/523,508 patent/US8369051B2/en active Active
  • 2007-01-17 WO PCT/EP2007/050434 patent/WO2008086891A1/de active Application Filing
  • 2007-01-17 CN CN2007800448904A patent/CN101548455B/zh not_active Expired - Fee Related
  • 2007-01-17 EP EP07703934A patent/EP2122813B1/de active Active
  • 2007-01-17 KR KR1020097016992A patent/KR20100014787A/ko not_active Application Discontinuation

Patent Citations (7)

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